On Thursday night when I hiked down to the bottom of the campground at Chisos Basin to check out the road to the sewage treatment pond, I stopped at an overview point that overlooks the sewage treatment pond and is an apparent overlook for campers for sunsets through The Window. I looked and listened for Gray Vireo from this spot, because I could not make it to he sewage treatment pond and back before dark, but without success. When I turned around to leave, there was a Greater Roadrunner quite close behind me, checking me out and probably curious about what I was doing. The Greater Roadrunner was also singing/calling, and also, perhaps looking for a handout, which the campers probably do even though is forbidden with signs saying so. Below is one of the best photos that I have obtained of a Greater Roadrunner.